Display screen or portion thereof with icon



FIG. 1 is a front image of a display screen or portion thereof with icon showing my new design; and,

FIG. 2 is a front view of another embodiment of a display screen or portion thereof with icon showing my new design.

The broken line showing of the display screen or portion thereof are for environmental purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with icon, as shown and described. 